It is important to clarify that . While the standalone battle royale mode, Warzone , was originally free and shared the same launcher, the full Modern Warfare experience—including the Campaign, Multiplayer, and Special Ops—requires a one-time purchase.
The game is available through official digital storefronts. Prices typically range from at full price to as low as $5.99 during major seasonal sales. Downloaded the game for free but now I gotta buy something?
Searching for "free downloads" for this title on PC often leads to malicious sites that distribute malware or phishing scams. How to Download Legally on PC